chief david patraeus because of an extra marital affair is not the end of the story. cbs news has learned the other woman is paula broadwell, she wrote a biography of patraeus. cbs 5 reporter linda yi on what patraeus faces next. >> reporter: it was just over a year ago, his wife by his side, that one of america's most decorated four star generals took the oath of office at c.i.a. director. today, he resigned in disgrace. in a statement to c.i.a. employees, patraeus said, after being married for over 37 years, i showed extremely poor judgment by engaging in an extramarital affair. the affair came to light during an f.b.i. investigation that started months ago. officials became concerned about what cbs news has learned were cryptic e-mails patraeus exchanged with his by graver paula broadwell. >> it's sad. >> cbs 5 military analyst retired colonel brendan kearney med broadwell earlier this year during her book tour. he said she was bright and articulate. >> she acknowledged she had been given unfettered access to him. >> does that seem suspicious to you, when you now t